Countable and Uncountable nouns en inglés

A noun renames a person, place or thing. If a noun is viewed as countable if:

• A or an can be used in front of it : a table, an egg
• It has a plural form : there are two tables
• It can be used in a question with how many: How many rooms are there?
• A number can be used before it: four computers

If a noun is viewed as uncountable:

• a/an cannot be used in front of it: Cereal is healthy
• it does not have a plural form: I like butter (NOT BUTTERS)
• it can be in a question with how much: How much sugar would you like?
• a number isn’t used in front of it: It has little caffeine.
• it always takes a “singular” verb: Milk is good for you.

Conclusions from the table:
• With countable nouns we have two forms: singular and plural and when we refer to uncountable nouns we only use one form.
• When we use the singular form with countable nouns we use a/an and with plurals we use some/any.
• With the uncountable nouns we do not use a/an and we can use some/any
• With countable nouns some/any means “an indefinite number”
• With uncountable nouns some/any means “a portion of”